EP2438488A1 - Method and device for controlling auxiliary materials in machine tools - Google Patents
Method and device for controlling auxiliary materials in machine toolsInfo
- Publication number
- EP2438488A1 EP2438488A1 EP10720435A EP10720435A EP2438488A1 EP 2438488 A1 EP2438488 A1 EP 2438488A1 EP 10720435 A EP10720435 A EP 10720435A EP 10720435 A EP10720435 A EP 10720435A EP 2438488 A1 EP2438488 A1 EP 2438488A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- workpiece
- kss
- tool
- machined
- code
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 title claims abstract description 7
- 238000003754 machining Methods 0.000 claims abstract description 8
- 230000006870 function Effects 0.000 claims abstract description 5
- 239000000314 lubricant Substances 0.000 claims description 22
- 239000002826 coolant Substances 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 14
- 239000000546 pharmaceutical excipient Substances 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 3
- 239000005068 cooling lubricant Substances 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/041—Function-oriented details
Definitions
- the invention relates to a method and a device for controlling excipients in machine tools, in particular in the supply of coolants and / or lubricants, according to the preamble of the main claim and the independent claims.
- the media supply of machine tools in particular the cooling and / or lubricant supply of cutting machine tools, today represents a part of the numerical control of the machine tool in a known manner and is stored in a corresponding programming language in the machine tool.
- the general machine management in a so-called M-code or with M-functions / commands displayed and the positions or trajectories of the tool and the current processing stages are displayed in the so-called G-code.
- Such a control of a machine tool is known, for example, from DE 693 28 266 T2, in which a coolant is switched on and off by appropriate M commands depending on the processing state in the G code.
- the invention is based on a method for controlling excipients in machine tools, in which by means of a numerical control over Maschinenfunktio- nen as M code switching on and off of the volume flow of the excipient.
- a numerical control over Maschinenfunktio- nen as M code switching on and off of the volume flow of the excipient.
- the invention can be carried out in a particularly advantageous manner, if the current physical parameters, in particular during machining, relate to the removal behavior on the workpiece to be machined.
- the removal behavior can be determined from the rotational speed or other mechanical and physical characteristics of the tool in the G code and the material properties of the workpiece to be machined at a time (t) and from the thus determined erosion is then advantageously via a predetermined period, the Abtrags over time (t) for each location (x, y, z) of the workpiece to be machined modeled.
- a three-dimensional CAD model of the workpiece to be machined can also be used in a simple manner, wherein the geometries located between the initial and target geometries defined via the CAD model can be calculated from the path movement of the tool. It can be used to model the Abtrags s a mathematical Abtragsmodell or a measured map.
- a temperature behavior of the workpiece to be machined over time (t) and the heat distribution for each location (x, y, z) of the workpiece to be machined can then be modeled and within predetermined limits Then by integration and peak consideration, a cooling demand for obtaining the controlled variable for the volume flow of the excipient, in particular the coolant and / or lubricant, are determined.
- a numerical control unit in an exciting numerically controlled machine tool, is provided which is provided with a programmable logic control program, so that between the switching on and off of the volume flow of coolants and / or lubricants as auxiliaries in M Code by means of a control arrangement, a regulation of the volume flow as a function of the web positions of the tool and the removal behavior of the workpiece to be machined from the G-code of the numerical control takes place.
- a computer program product stored on a computer-usable medium is applicable in the numerical control, comprising computer-readable program means which, when the computer program product is executed on a microprocessor with associated memory means or on a computer, execute it for carrying out the method described above or Initiate operation of the device.
- FIG. 1 shows a schematic block diagram of a method for controlling auxiliary substances in machine tools according to the prior art.
- Figure 2 is a schematic block diagram of a erfindunstraen method for controlling excipients in machine tools, especially in the supply of coolants and / or lubricants.
- FIG. 1 schematically shows a method for controlling auxiliaries in machine tools according to the prior art.
- parts of an NC program for the numerical control of a machine tool are shown, for example, with a milling cutter as a tool.
- some G-codes g01 ..., etc. are listed, which represent, for example, the trajectories of the tool and the current processing stages at specific times.
- an M code M1 for the general machine functions which is indicated here on the right outside of the block 1 that thereby the cooling and lubricant supply KSS is turned on.
- an M-code M2 follows, which is indicated here on the right outside of the block 1 that thereby the cooling and lubricant supply KSS is turned off , without in between a further influence on the volume flow of the cooling and lubricant supply KSS takes place.
- Between switching on and off the cutting takes place via a path movement of the milling cutter as a tool relative to the workpiece according to the G-codes go2 etc.
- the cooling and lubricant requirement according to the invention between the M-codes M1 for KSS-on and M2 for KSS-off automatically derived from the path description of the machining curve in the G-code and known process parameters modeled after the block 2.
- Block 4 indicates how the web movement is initially extracted from the G code for this purpose. Together with three-dimensional CAD models of the workpiece to be machined according to block 5, one obtains therefrom at any time t an exact image of the current workpiece geometry. For this example, the raw workpiece and the target workpiece is each deposited as a three-dimensional CAD model. The workpiece geometries in between are calculated via the path movement of the tool.
- the temperature behavior according to block 10 can now be modeled as follows. About the removal behavior (block 9) of the heat input into the workpiece and the radiated heat in the environment is known. The heat input into the workpiece now diffuses according to the law of diffusion into the workpiece, whereby this diffusion process can be relatively easily modeled, since the heat input, the location x, y, z and overall geometry of the workpiece are known at each time t. This results in the heat distribution at each time point t and each location x, y, z. Using predetermined limit values, the cooling demand for block 1 1 can then be calculated from this by integration and peak value analysis.
- This demand of the volume flow of the coolant and lubricant requirement can be forwarded via output 3 (KSS regulated) to the controllable coolant and lubricant supply KSS, which then supplies the machining process.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Numerical Control (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910026656 DE102009026656A1 (en) | 2009-06-03 | 2009-06-03 | Method and device for controlling auxiliary substances in machine tools |
PCT/EP2010/057348 WO2010139605A1 (en) | 2009-06-03 | 2010-05-27 | Method and device for controlling auxiliary materials in machine tools |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2438488A1 true EP2438488A1 (en) | 2012-04-11 |
EP2438488B1 EP2438488B1 (en) | 2014-01-08 |
Family
ID=42670672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10720435.6A Active EP2438488B1 (en) | 2009-06-03 | 2010-05-27 | Method and device for controlling auxiliary materials in machine tools |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2438488B1 (en) |
DE (1) | DE102009026656A1 (en) |
WO (1) | WO2010139605A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI501059B (en) * | 2013-09-12 | 2015-09-21 | Syntec Inc | Machining program interpretation method for machine tool |
CN115562174B (en) * | 2022-12-01 | 2023-03-24 | 大方智造(天津)科技有限公司 | Machine tool follow-up cutting simulation method based on G codes |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4186529A (en) * | 1977-06-28 | 1980-02-05 | S. E. Huffman Corporation | Programmably controlled method for grinding end cutting tools and the like |
DE69328266T2 (en) | 1992-12-28 | 2000-08-31 | Mitsubishi Denki K.K., Tokio/Tokyo | Numerically controlled machine tool and method |
US7878096B2 (en) * | 2006-10-11 | 2011-02-01 | United Technologies Corporation | CNC coolant nozzle |
JP4990650B2 (en) * | 2007-03-01 | 2012-08-01 | 東芝機械株式会社 | Deep hole machining method and apparatus |
DE102007016326A1 (en) | 2007-04-04 | 2008-10-09 | Fmb Blickle Gmbh | Cooling agent supplying method for intercooled machining tool, involves determining operating condition of tool by comparing pressure of cooling agent with reference value stored in evaluation device |
-
2009
- 2009-06-03 DE DE200910026656 patent/DE102009026656A1/en not_active Withdrawn
-
2010
- 2010-05-27 EP EP10720435.6A patent/EP2438488B1/en active Active
- 2010-05-27 WO PCT/EP2010/057348 patent/WO2010139605A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2010139605A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102009026656A1 (en) | 2010-12-09 |
WO2010139605A1 (en) | 2010-12-09 |
EP2438488B1 (en) | 2014-01-08 |
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